/**
 * Created with IntelliJ IDEA.
 * User: 花海
 * Date: 2022-07-30
 * Time: 9:11
 */
public class AddAboutFraction {
//    计算1/1-1/2+1/3-1/4+1/5 …… + 1/99 - 1/100 的值
    public static void main(String[] args) {
        double sum=0;
        for(int i=1;i<=100;i++){
            if(i%2==1){
                sum+=1.0/i;
            }else{
                sum-=1.0/i;
            }

        }
        System.out.println("the value is"+sum);
    }
}
